Posts (page 213)
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3 min readTo call a function from a script in another script in MATLAB, you need to first make sure that the function is saved in a separate file with a .m extension. Then, in the script where you want to call the function, you can use the function name followed by parentheses and any input arguments that the function requires. Make sure that the function file is in the same directory or is included in the MATLAB path for the script to be able to find and execute the function successfully.
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7 min readIn MATLAB, you can group points with a given tolerance by first calculating the pairwise distances between all points using the pdist2 function. Then, you can create a distance matrix and use it to determine which points are within the given tolerance of each other. Finally, you can group these points together based on their proximity using functions such as the linkage and cluster functions. By adjusting the tolerance parameter, you can control how closely points are grouped together.
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7 min readTo import data from a Google Cloud database into MATLAB, you can use the Database Toolbox in MATLAB. First, establish a connection to your Google Cloud database using the appropriate driver and connection settings. Once the connection is established, you can query the database and retrieve the data into MATLAB using SQL commands.You can retrieve the data as a table or dataset object in MATLAB, which can then be used for further analysis, visualization, or processing.
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4 min readIn MATLAB, you can read a .xls file using the fscanf function. However, fscanf is typically used for reading formatted data, and .xls files are binary files. It is recommended to use the xlsread function instead, which is specifically designed for reading Excel files in MATLAB. By using xlsread, you can easily import data from a .xls file and store it in a MATLAB variable for further processing and analysis.
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5 min readTo use a for loop with a series in MATLAB, you can iterate through the elements of the series by specifying the range of values in the loop header.
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2 min readTo resize the axes of a graph in MATLAB, you can use the "xlim" and "ylim" functions to set the limits of the x and y axes, respectively. For example, you can use these functions to zoom in or out on a specific area of the graph by specifying the desired limits. Additionally, you can also use the "axis" function to set the overall size of the graph, including the position of the axes and the size of the plot area.
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5 min readTo extract one column from a MATLAB matrix, you can use indexing. You can specify the column you want to extract by using the colon operator between the row indices and the desired column index. For example, to extract the 2nd column from a matrix A, you can use the following code: column = A(:,2); In this code snippet, the colon operator : is used to select all rows, and 2 is used to specify the 2nd column. The extracted column will be stored in the variable column.
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5 min readTo unfold a matrix in MATLAB, you can use the reshape function. The reshape function rearranges the elements of a matrix based on the dimensions provided.For example, if you have a matrix A with dimensions m x n, you can unfold it into a row vector by reshaping it with dimensions 1 x (m*n):B = reshape(A, 1, numel(A));This will reshape matrix A into a row vector B with all the elements in the same order as in A.
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5 min readTo plot a discrete time signal using MATLAB, you can use the stem function. First, create a vector representing the time index of the signal, for example n = 0:10. Then, create a vector representing the amplitude values of the signal at each time index, for example x = [1, 2, 3, 4, 5, 6, 7, 6, 5, 4, 3]. Finally, use the stem function to plot the signal by specifying the time index vector and the amplitude values vector as input arguments, for example stem(n, x).
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5 min readTo create and save a large dataset in MATLAB, you can start by generating the data using built-in functions or importing it from an external source. Once you have the dataset, you can store it in a variable or array in MATLAB.To save the dataset, you can use the save function in MATLAB. Simply specify the name of the file you want to save the dataset to, along with the variable or array containing the data. You can also specify the file format, such as .mat or .csv, depending on your needs.
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5 min readIn MATLAB, you can create a C# null object by using the System.Object class. To do this, you first need to create a variable of type System.Object and set it to null.Here is an example code snippet that demonstrates how to create a C# null object in MATLAB: % Create a C# null object nullObject = System.
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5 min readTo find unique values in a cell array in MATLAB, you can use the unique function. The unique function returns a list of unique values in an array while ignoring any duplicates. You can use this function directly on a cell array to find unique values within the cells of the array. Additionally, you can specify whether you want to return the values sorted or in their original order by specifying additional arguments in the unique function.